HelpSectionPluginInterface

class \Drupal\help\Plugin\HelpSection\HelpSectionPluginBase extends \Drupal\Core\Plugin\PluginBase implements \Drupal\help\HelpSectionPluginInterface uses \Drupal\Core\Cache\UnchangingCacheableDependencyTrait
class \Drupal\help\Plugin\HelpSection\HelpTopicSection extends \Drupal\help\Plugin\HelpSection\HelpSectionPluginBase implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface, \Drupal\help\SearchableHelpInterface
class \Drupal\help\Plugin\HelpSection\HookHelpSection extends \Drupal\help\Plugin\HelpSection\HelpSectionPluginBase implements \Drupal\Core\Plugin\ContainerFactoryPluginInterface